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CPU Benchmarks

Over 1,000,000 CPUs benchmarked

Intel Core i7-6700K @ 4.00GHz vs Intel Core i7-5820K @ 3.30GHz

The values for the CPUs below are determined from thousands of PerformanceTest benchmark results and are updated daily.


×Intel Core i7-6700K @ 4.00GHz×Intel Core i7-5820K @ 3.30GHz+ ADD
Price$287.99
BUY NOW!		$199.991
Socket TypeLGA1151LGA2011-v3
CPU ClassDesktopDesktop
Clockspeed4.0 GHz3.3 GHz
Turbo SpeedUp to 4.2 GHzUp to 3.6 GHz
# of Physical Cores4 (Threads: 8)6 (Threads: 12)
Max TDP95W140W
Yearly Running Cost$17.34$25.55
First Seen on ChartQ2 2015Q2 2014
# of Samples137834306
Cross-Platform Rating1695721694
Single Thread Rating25302013
CPU Mark89569803
1 - Last seen price from our affiliates NewEgg.com & Amazon.com.

CPU Mark Rating
As of 1st of March 2021 - Higher results represent better performance
Intel Core i7-6700K @ 4.00GHz
 8,956
Intel Core i7-5820K @ 3.30GHz
 9,803
PassMark Software © 2008-2021
CPU Value (CPU Mark / $Price)
As of 1st of March 2021 - Higher results represent better value
Intel Core i7-6700K @ 4.00GHz
 31.10
Intel Core i7-5820K @ 3.30GHz
 49.02
PassMark Software © 2008-2021
CPU Single Thread Rating
As of 1st of March 2021 - Higher results represent better performance
Intel Core i7-6700K @ 4.00GHz
 2,530
Intel Core i7-5820K @ 3.30GHz
 2,013
PassMark Software © 2008-2021

Estimated Energy Usage Cost
Estimated Energy Adjustable Values
Average hours of use per dayAverage CPU Utilization (0-100%)1Power cost, $ per kWh2
1Average user usage is typically low and can vary from task to task. An estimate load 25% is nominal.
2Typical power costs vary around the world. Check your last power bill for details. Values of $0.15 to $0.45 per kWh are typical.
Intel Core i7-6700K @ 4.00GHzIntel Core i7-5820K @ 3.30GHz
Max TDP95W140W
Power consumption per day (kWh)NANA
Running cost per dayNANA
Power consumption per year (kWh)NANA
Running cost per yearNANA
Shown CPU power usage is based on linear interpolation of Max TDP (i.e. max load). Actual CPU power profile may vary.